Why would this girl never like my posts but copy my ideas?

There is this girl I know who used to be in the same tutor group as me at university. I’ve got her as a friend on Instagram, and she always views my stories but never likes any of my posts.

Anyway, I noticed that she made a new post the other day and I thought it looked exactly like the photo I posted of myself. She was wearing red lipstick, had her hair in a high ponytail and was wearing a long neck dress. This felt so similar to the latest photo I posted of myself, except I posted this a month before she did.

why would she not like my posts but make hers a complete carbon copy of mine and use my ideas?
Why would this girl never like my posts but copy my ideas?
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